The unison crack does not exist in Kontakt 5. If you have a cracked copy of Kontakt 5.8.1 (by R2R), Bass Dragon will run without the pop. Simply:
The synth now uses a zero-crossing detection engine. When you play a new note, the old voice fades to silence in under 1ms instead of abruptly stopping. This between notes. bass dragon unison crack fixed
To ensure the old crackling files are gone: The unison crack does not exist in Kontakt 5